Please upload more of this kind of tutorial. Although not for the views, Puro na lang kasi magkakamukha topic ng mga HVACR Chanel dito, ito lang may deep scientific explanation at right way to compute or quote regarding HVACR design
One point of clarification iho. Malawak ang scope ng refrigeration. HVAC is more of controlling the air conditioning system in a wider scope and year-round. Specifically, HVAC is an extended application of refrigeration. The presentation made by the young lady is just a small chip on the block.
0:00 intro (you can play the video at 1.5 speed) 0:28 vapor refrigeration compression 0:47 liquid refrigerant 1:10 pressure 1:44 enthalpy 2:28 pH diagram 2:48 pH diagram chart 4:39 SVCC system 5:04 Evaporator 6:10 expansion valve 6:24 Isenthalpic Throttling 7:07 Refrigerating Effect 8:07 Refrigerating Capacity 9:24 sample problem (only RE and RC) 10:31 Work of Compression 11:07 Coefficient of Performance 12:37 Sample problem for this topic need ko lang to for review later, inang to ngayon pa binigay pang pointers sa amin :
madam possible po bang sumabog ang motor compressor kung sakaling nakargahan ng ibang refrigerant? kung possible po bakit nasabog? salamat po sa agarang sagot.
Mr. Mickey Meister, good day to you sir. It is quite unfortunate that I've only seen this video today (02 June 2023). Thus, it is also my first time seeing and reading your comment. If you don't mind, allow me to address your question: -Your refrigerant is R-717 (Ammonia). The pressure you mentioned is 376.3 kPa (the saturation temperature is approximately -3.58 Celsius from the properties table of ammonia) -May I ask, what is the phase condition of your ammonia at 376.3 kPa? Is it saturated vapor, saturated liquid, saturated mixture, or superheated? -If it is saturated vapor, the spec. enthalpy is 1438.03 kJ / kg (spec. entropy is 5.3774 kJ / kg-K) -If it is saturated liquid, the spec. enthalpy is 163.38 kJ / kg (spec. entropy is 0.6489 kJ / kg-K) -If it is a saturated mixture, you have to give the value of x (the quality of the mixture) to find its specific enthalpy and specific entropy. The formula is h = hf + x(hg-hf); s = sf + x(sg-sf). -If ammonia is a superheated vapor, the specific enthalpy and specific entropy can be found according to its temperature and pressure. The method can be done by the graphical method using the P-h and T-s diagrams or by using the properties table or by the formula: s = hg + Cp (tsh - tg) where Cp is the specific heat at vapor state, tg is the saturation temperature, and tsh is the superheated temperature. -Also, if ammonia is superheated, the values can be found in the superheated table either by direct reading or by interpolation method. -I hope I am able to satisfy your question. ... Watched the video here in the middle east. 🙂😊😇
The liquid is not compressible fluid, when refrigerant in liquid form by chance enters the compression chamber it can damage the mechanical parts or electrical components, because the compressor will forced to compress the liquid, the compressor will try to compress the liquid until it fails or break. But why should the refrigerant with more than one element such as R410a be charged in liquid form? Because, element that composed R410a has different density, the chemical composition of what you will charge may not be incorrect, because the less dense of the gas component of R410a may first exit the charging tank. Resulting to improper chemical composition inside the refrigeration system. So the perfect solution it to charge the system by liquid form when the compressor is not running then wait until there is no more liquid in the gas or suction line before starting the compressor. You can turn on the fan motor so that the liquid refrigerant can evaporate fast during liquid charging.
Ang galing niyo po Ma'am! Iba talaga kpag mechanical engr.
Please upload more of this kind of tutorial. Although not for the views, Puro na lang kasi magkakamukha topic ng mga HVACR Chanel dito, ito lang may deep scientific explanation at right way to compute or quote regarding HVACR design
One point of clarification iho. Malawak ang scope ng refrigeration. HVAC is more of controlling the air conditioning system in a wider scope and year-round. Specifically, HVAC is an extended application of refrigeration.
The presentation made by the young lady is just a small chip on the block.
Very great tutorial ever bfore
Laking tulong ng mga videos nyo.. thank you. ❤️
Thank you po talaga, buti pa dito mas na gets ko
galing mo maam,. natuto ako.
Great video po! Dami ko pong natutunan
Maam, gawa naman po kayo video kung paano malalaman kung ilang HP ang compressor ng isang refregerator ug air con. Salamat po sana ma notice💞💕
MA'AM ANG GANDA NYO POOOO
NICE
ang ganda niu po.
0:00 intro (you can play the video at 1.5 speed)
0:28 vapor refrigeration compression
0:47 liquid refrigerant
1:10 pressure
1:44 enthalpy
2:28 pH diagram
2:48 pH diagram chart
4:39 SVCC system
5:04 Evaporator
6:10 expansion valve
6:24 Isenthalpic Throttling
7:07 Refrigerating Effect
8:07 Refrigerating Capacity
9:24 sample problem (only RE and RC)
10:31 Work of Compression
11:07 Coefficient of Performance
12:37 Sample problem for this topic
need ko lang to for review later, inang to ngayon pa binigay pang pointers sa amin :
Thanks for sharing your videos. God bless.
👍👍👍👍👍
Hi Joy!!!
👍💗
❤❤❤
😍👏👏👏👏👏👏👏👏👏😍
madam possible po bang sumabog ang motor compressor kung sakaling nakargahan ng ibang refrigerant? kung possible po bakit nasabog? salamat po sa agarang sagot.
bat po nung pag plot ko sa -20C ung given sg nya is 0.9 pero di sya tatama pag nagplot na ako sa chart ng r134a
Yan Ang binbayran sa engineer pagdting problem..
Nice to u gnda 🙂
Hello maam, how to find po the enthalpy of a given pressure with unknown specific temperature. Like enthalpy and entropy of 376.3 kPa ammonia
Mr. Mickey Meister, good day to you sir. It is quite unfortunate that I've only seen this video today (02 June 2023). Thus, it is also my first time seeing and reading your comment. If you don't mind, allow me to address your question:
-Your refrigerant is R-717 (Ammonia). The pressure you mentioned is 376.3 kPa (the saturation temperature is approximately -3.58 Celsius from the properties table of ammonia)
-May I ask, what is the phase condition of your ammonia at 376.3 kPa? Is it saturated vapor, saturated liquid, saturated mixture, or superheated?
-If it is saturated vapor, the spec. enthalpy is 1438.03 kJ / kg (spec. entropy is 5.3774 kJ / kg-K)
-If it is saturated liquid, the spec. enthalpy is 163.38 kJ / kg (spec. entropy is 0.6489 kJ / kg-K)
-If it is a saturated mixture, you have to give the value of x (the quality of the mixture) to find its specific enthalpy and specific entropy. The formula is h = hf + x(hg-hf); s = sf + x(sg-sf).
-If ammonia is a superheated vapor, the specific enthalpy and specific entropy can be found according to its temperature and pressure. The method can be done by the graphical method using the P-h and T-s diagrams or by using the properties table or by the formula: s = hg + Cp (tsh - tg) where Cp is the specific heat at vapor state, tg is the saturation temperature, and tsh is the superheated temperature.
-Also, if ammonia is superheated, the values can be found in the superheated table either by direct reading or by interpolation method.
-I hope I am able to satisfy your question.
...
Watched the video here in the middle east. 🙂😊😇
I wondered if you're licensed mechanical engr na now.
I wish can use English 😊thank you😊
walang interpolation?
ma'am Yung r410 ,a ano tamang pgcharge gas b dapat o liquid.. iba KC tinutuwad Yung tangke
The liquid is not compressible fluid, when refrigerant in liquid form by chance enters the compression chamber it can damage the mechanical parts or electrical components, because the compressor will forced to compress the liquid, the compressor will try to compress the liquid until it fails or break. But why should the refrigerant with more than one element such as R410a be charged in liquid form? Because, element that composed R410a has different density, the chemical composition of what you will charge may not be incorrect, because the less dense of the gas component of R410a may first exit the charging tank. Resulting to improper chemical composition inside the refrigeration system. So the perfect solution it to charge the system by liquid form when the compressor is not running then wait until there is no more liquid in the gas or suction line before starting the compressor. You can turn on the fan motor so that the liquid refrigerant can evaporate fast during liquid charging.
Pag ganto instructor namin, di na ako aabsent
Ang ganda mo! May bf kana ?
bakit po sa ibang textbook ang formula ng COP=RC/Wc??
pede bang mag aral sa inyo
Hi baby, pacontent naman BTU to HP, HP to Tons conversion. TIA.
prof nyo po ba si sir Gedaria?
sa thermodynamics po....
Pwede Po makahingi Ng link pressure enthalpy diagram Wala Po sa google
Download link
PH diagram😮 bat TS at PV diagram lng tinuturo samin😢
Please use English
bakit po sa ibang textbook ang formula ng COP=RC/Wc??